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With the HA4000 4-Channel Headphone Amplifier, up to four people can listen to a recorded take at the same time, while being able to adjust their own individual headphone volume. High quality sound is maintained even at full volume. The HA4000 is also great to use during playing or recording, allowing listeners to hear the main mix.

Max Output Level: +22dB
Signal to Noise Ratio: >98dB
Input Connector: 1/4" TRS Stereo
Output Connector: 1/4" TRS Stereo
Input Impedance: 1000KO (unbalanced)
Output Impedance: Minimum 10O each channel
Max Gain: 20dB per channel
Power Supply: 12-18v DC adapter (included)